Process of manufacturing tie-plates.



No. 879,23@ Specification or Application Sled Je' llt To all whom muy comme:

Be .it lino 'n that l, lili/infin een ot the United. States, re A at Chicago, county of Cool7 vState o illinois) have invented a certain. new and usely l finorovenient in Processes of Manulactui" j Plates, and declare the following to be a lull, clear, and exact description of the saine, such as Will enable others skilled in the art to which it pertains to make and use the saine, reference being had to the aecoinpai'iying draw'- ings, which forni a part of this specification.

My invention relates in general to railroad track asteiiings, and more particularly to a process oi manufacturing tie plates.

' lt is customary to interpose metallic plates between railroad. rails and the supporting' ties in order to prevent the Wetiring, away of the ties by rails. and in order to more lirnily the rails to the ties and thereby prevent both longitudinal creeping;- and lair eral spreading el the rails with respect to the ties.

It is desirable that tie plates should have ribs or lla. D s on their under surfaces to prevent movement of the pl stes upon the ties, and should also have shoulders on their upper surfaces to prevent spreading of tl'ieg rails. ln order that tie piates may be as light as possible7 and at the saine tinie possess the requisite strength they niaj'f be advantageously provided with longitudinal grooves in their upper surfaces.

The primary object of my invention to provide an improved process for economically and efficiently manufacturing tie plates liaving flanges on their under-surfaces to engage the ties and having shoulders on their upper surfaces to prevent the spreading; olf the rails, and also having grooves in their upper surfaces alining with the llanges. v

My improved pr( .ess may be gener v described as consisting in passing; a e oi metal successively between pairs ot rolls having ribs and grooves on their periplieries, thereby step by step converting the bar into a continuous blank having longitudinal flanges ori one surface and alining `grooves on its other surfaces7 tl'ien passing the blank .between a pair of rolls, one of which conipletes the` formation of the longitudinal 'langes, While the` ot transverse croci:

it per ,rolls have il atented Feb. 18 3.9138. its?. seins/i. saisie. i

easing/to 4the desiril length ci the tie es, thereby tornai@ shoulders on the pls terrnediateel tlie grooveaand fiiially cutting the continuous blank into to forni tie plates.

lvl 'iivciition will be more fully described licite/netter with il'etercnee to the accompanying drawings .illustrating the several steile comprisingmy process and in `which Figure l is an end view of a billet et metal; Fig. 2 elevational views of portions of the peripl'ieries' oi a pair oi" rolls between lwhich the billet is shown in section 5 Fig. 3 a view similar to Fig. 12 showing a pair of rolls betsf'een which the billet is subsequently passed a sectional View of the billet after iiaving parsed between successive p airs el rolls; Fig. crus" sectional vier/v ol the bif .l t peri in its treatment; etici i view oil vthe billet prior to being pa: througli the pair or' rolls;Y Fig. 7 s. longitudinal sectional view through the blank into which the billet has been converted shoe-fing; the adiacent peripheries of the last pair of rolls which torni the shoulders on the blank; Fig. an elevational view of the last pair of rolls which torni the shouldersl on the "blank, the blanl bein@ shown in section; and Fig. 9 an end elevatioi'i of a completed tie plate.

Similar `reference characters are used to designate similar parts in the several figures of the drawing.

Reference character' ,li designates a billet of metal which is to .be converted by my ini )rovedfproc into tie plates.

heference characters E and C designate the rolls in a pair between which the billet is pa ed, the roll l/ .having ribs t', 1) on its L te u'oss-seetion such as indicated at A. The b and. c respectively which prevent the billet from spreading laterally and consequently result in its being extended longitudinally.

ln 3 l have illustrated at A2 the crosssectioii oi the billet having been passed through successive 'pairs of rolls, in such lig;- ure the billet beingI shown as between rolls l l m, th .vins` three grooves if# on its periphery.

"ated at the crossyILOG section of the billet after having passed between additional pairs of rolls While in Fig. 5 i have shown at A. the cross-section el the billet at a later stage in its treatment. I

ln F ig. 6 A5 indicates the cross-section of a blank into which the billet has been converted by being passed between the successive pairs of rolls. The rolls in the successive bars are arranged nearer together so that the billet will be gradually llattened, and the peripheries of the rolls in Lie successive pairs are such as to gradually impart to the billet longitudinal grooves on one surface and lon gitudinal alining l langes on .its othei` sinlace. T he successive pairs of' rolls through which the billet has passed in being converted into the blank. shown iucross-sectiou in Fig. (j, form longitudinal raised portions between the grooves on the upper surface ol" the blank, such raised portions beirlig formed lo allord the metal to be longitudinally displaced in the subsequent step by which the shoulders are formed.

After the billet has been converted into a blank having a cross-section such as indicated in Fig. 6, the blank is passed between a final pair of rolls indicated in Figs. 7 and 8 by means of which raised meta-l intermediate of the grooves is longitudinally displaced to form transverse shoulders intermediate ollv the grooves at distances apart corresponding to the desired length ol: -the tie plates.

Referring more particularly to Figs. 7 and 8 reference character A7 indicates the blank after passing between the last pair ol' rolls B7 and C7.

a7 indicates the shoulders formed on one surface of the blank by the grooves L7. rl`he grooves 57 are =tor1ned intermediate of the four longitudinal ribs 68 on the )eriphery of the roll B7 which completes the lorl'na'tion ol the longitudinal grooves o5 in the upper surface Vot the blank.

c7, c7 designate longitudinal grooves in the eriphery ot the roller C7 wl ich complete. the ibrrnation of the flanges on the und cr-s urliace of the blank, the outer grooves being of a greater depth than the intermediate ones, thereby forming the outer flanges D, D of freater depth than the intermediate `flanges ,d on the under-surface of the blank. After the continuous blank has passed between the rolls B7 and C7 it is cut into lengths to form and having shoulders interlnc fing new hilly dcscril'ied my invention, what l claim. as new and f lesire to secu e by Letters lallent is:

l. The pria; ss ol .niazuiiacturi plate blank which consists in .lirsl billet of metal into a contiuumis longitiulinal g1 cores in one sui-lace and hing?n tudina! ribs on the other surface opposite the grooves7 and then rolling the strip so as to displace the nietal intermediate the grooves sulliciently longitudinally to produce trans verse shoulders on the upper surface ollsaid strip at cer yain distances apart.

2. The process of' manufacturing a tie plate blank, which consists in irst rolling a billet ol metal into a continuous blank hav ing a plain under siuface provided with longitudinal ribs and an upper surface divided into a. plurality ot longitudinal beadwlike the ribsl on the other surface and forming grooves above said ribs and then passing said strip through rolls arra aged to displace longitiulinally enough ol the material ol said bearb like sections to produce transverse shoulders on said strip arranged at certain distances apart.

The process of nnu'iutacturing a ti. )late blank, which consists in irst rolling a billet ot metal into a c.aitiiuious strip having longitudinal ribs on its under surface and an upper surface divided into a pluralityr ol longitudinal beaddiko sections, and then pass ing the strip through rolls arranged to dis-- place a portion oi the material ot said beadM like sections longitudinally and to leave transverse shoulders project-ing above said bead-like sections at certain distances apart.

ln testimony whereof, l sign this spec1tication in the presence ol two witnesses.

EDWN H. 'BELL Wi tnesses t Gao. L, WILKINSON, HARRY S. Gurnee.

alining wi th tions arranged opposite the spaces between.

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